If you would like the DLC this is what I just did and I am downloading it right this minute.
Go to the HELP bit at the btm of the page. Then get them to call you back (their expense) by following the prompts. Then when they call you ask for a 12 digit code for the SEV2 DLC. Then on the main menu screen on SEV2 choose DLC and itll take you to the PSN. When you get there it will say "no content" but if you type in the code in the redeem code bar any way it hopefully will do as mine and allow you to download the DLC. Good luck and remember to make sure you don't hang up untill you get the code entered so you know it works. Peace